ASTROSAT CZTI

Data Quality Report

Orbit 39972

Creation date: 2024-06-27T22:10:46.481006
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_054T03_9000005516_39972cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39972cztM0_level2_quad_clean.evt
Size (bytes)418,080,96089,173,440
Size398.7 MB 85.0 MB
Events in quadrant A3,005,105613,251
Events in quadrant B3,845,247595,050
Events in quadrant C3,543,215596,439
Events in quadrant D4,645,927503,092

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121723
B0151422
C0140702
D0177382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5614120.213751%
B56143876.893481%
C5614711.264695%
D561457810.295689%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7135 5614 9 9 0.13% 0.16%
B 7136 5615 317 317 4.44% 5.65%
C 7136 5614 46 46 0.64% 0.82%
D 7136 5615 568 568 7.96% 10.12%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 493254 3880.46 618 605 127.0
A 2 79 44905 348.94 618 605 127.0
A 6 10 35440 274.39 618 605 127.0
B 4 171 1193231 10348.35 594 578 115.3
B 4 170 108324 934.88 594 578 115.3
B 5 255 79903 688.28 594 578 115.3
C 9 54 827457 5905.34 600 604 140.0
C 15 214 237288 1690.39 600 604 140.0
C 0 10 76192 539.85 600 604 140.0
D 2 250 1271120 8808.98 577 560 144.2
D 2 249 537659 3723.79 577 560 144.2
D 1 47 302523 2093.55 577 560 144.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter